Advertisements
Advertisements
Question
Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1-2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer.
Solution
After pouring iodine solution into test tube ‘A’, its colour will change to blue-black due to the presence of starch in boiled rice. In test-tube B, the colour of iodine will not change because of the digestion of starch into sugars by the action of the salivary amylase enzyme during chewing.
APPEARS IN
RELATED QUESTIONS
When air is blown from the mouth into a test tube containing lime water, the lime water turned milky due to the presence of ____________.
Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
Which is the correct sequence of parts in the human alimentary canal?
If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it in spite of being blindfolded?
Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food. Can you reason why?
In the dental formula `" 2,1,2"/ "2,1,2"` 3 refers to ______.
Lysozyme is seen in ______.
The act of bringing swallowed food back to the mouth ______.
